VRA MOD LITE RULES
2011

1. BODY STYLES

Top of Page
(a) Modified appearing body style such as IMCA or DIRT modified. These are to be known as Mod Lite body styles.
2. FRAME AND ROLL CAGE Top of Page
(a) Mainframe members will be minimum of 1" X 2" x .120" wall rectangular steel tubing only. Mainframe rail consist of the length between the front lower a-arm cross member and the rear main roll bar upright. No aluminum allowed in cage or frame.
(b) Mainframes will have a minimum of 3 cross members between firewall and back of seat fabricated of same material as frame rails. Alternate material may be steel angle, min. 125" X 1.5" X 2". Cross bracing in floor under driver strongly recommended. Rear frame rails at rear roll bar must be 34 max and 30 minimum outside dimension. Rear roll bar must meet same dimension as the frame it is mounted to. Frame may taper forward of driver seat area. Front engine area frame width must be 24: max and 20 min outside dimension. Left and right frame rails must be the same + or .
(c) Roll cage must be DOM steel minimum 1.25" x .083"
(d) All cars must have cage bars installed across door openings on both sides. Bars to be welded in place as part of roll cage. Minimum size 1" x .095. Cars with bars mounted on doors must have full doorframe and minimum of 2 horizontal crossbars. Minimum 1 x .083". Cars with bats mounted on doors must have 1/4" x 2" steel stops welded in on each side of opening, totaling a minimum of 4" on each end of door.
(e) It is required to have a steel bar with a minimum size of 1" X .065" from doorpost to doorpost, under the dash. Must be welded.
(f) No down tube frame cars allowed. Any bars going from cowl area to snout must remain below the upper line of hood.
3. OVERALL DIMENSIONS Top of Page
(a) 42" min 50" max from ground - total car height.
(b) 124 maximum overall length bumper to bumper.
4. SIDES AND REAR QUARTER PANEL Top of Page
(a) 84" max - Door and rear quarter length.
(b) 30" min 38" max - side height of rear quarter panel from the ground. 30 max height of quarter panel.
5. HOOD Top of Page
(a) 20" min 27 max - hood height excluding breather protectors (bottom of frame rail to top of hood). Ram air induction system prohibited. Rear of hood becomes part of windshield area rules. No part of nose section (in front of spindle centerline) may be wider than a maximum of 24. Hood may taper out to door panels at the rear.
6. ROOF PANEL Top of Page
(a) 40" min 48" max - length of roof panel. 36" min 42" max - width of roof. No part of roof panel may have more than 14o of angle rake. No deflector of any type on upper sides or rear of roof panel. Roof entrance hatch optional.
7. REAR UPPER QUARTER PANEL
(a) 20" min 38" max rear upper side panel may contain Plexiglas. Side panels maybe no higher than 3" at the rear of the straight line of quarter panel top edge. Side panel may be no higher than an imaginary line from the rear edge of roof panel to 3 above the top edge of the rear quarter panel.
8. SIDE WINDOW Top of Page
(a) 18 minimum side opening length. 10 minimum side opening height front and rear.
9. INTERIOR Top of Page
(a) 46" min 50" max - width of rear shelf and body panels. Rear shelf may have no more than a 5o max rake and may not be concave or convex in design. No lips or spoilers of any kind. The rear frame area from the rear shelf downward a minimum of 16 must be completely enclosed the width of the frame. Louvers allowed no holes.
(b) 36" min 56" max - length of right side pod area with max 30o. Left side pod may be altered for driver access.
(c) Rear quarter distance from center of rear 20" min 30" max.
(d) Cockpit cover with a max of lip will be permitted providing the on/off cutoff switch is reachable from outside the car by safety personnel.
(e) Deck lid height from ground 30 minimum, 36 maximum. Rear spoiler max of 4 total material; with lip max . Spoiler and lip allowed on rear deck only.
(f) Side pod may not extend rearward past the centerline of rear axle.
(g) Body must be centered on chassis.
(h) All dimensions will be measured to + or unless otherwise specified.
10. BUMPERS Top of Page
(a) Front maximum width 30". Bumper height 6 to 8" with 2-bar loop. Ground to top of bumper: 12 minimum, 16 maximum. Bumper may not extend more than 12" forward of front tires.
(b) Rear maximum width 56 with 3 vertical bars. Bumper height 6 to 8" with 2-bar configuration. Ground to top of bumper: 12 minimum, 16 maximum. May not extend more than 8 behind rear body panels.
(c) Bumper material must be hollow, round, and steel, with max wall thickness of .095''
11. NERF BARS Top of Page
(a) Full-length nerf bars between front and rear tires mandatory. Maximum outside diameter of 1.25 and .095'' maximum thickness. Must be hollow. May not extend out beyond tread width more than 1" at the rear only.
12. FIREWALLS
(a) Firewall front and rear must be metal and must completely separate engine and rear compartments from cockpit. Engine protruding into cockpit must be enclosed. No holes or gaps over 3/8th of an inch allowed.
13. SUSPENSION Top of Page
(a) Front suspension must not extend rearward past the most forward panel of the firewall.
(b) Rear trailing arm/radius rod specifications:
1) Arms may have a maximum length of 30.
2) Torque-absorbing devices are NOT permitted.
3) Maximum 3 radius rods or 3 link suspension.
4) Single pan hard bar. J-bar allowed
(c) Wheel offsets are allowed.
(d) Hub offsets are NOT allowed. Hubs front and rear must be within 1/2 distance from mainframe rail on either side of car, measured from center of rotor to vertical plane of frame rail. 60 maximum width outside of tire to outside of tire. Wheelbase will be 73" (+ or-) 1/2 ".
(e) Coil-over shocks are the only allowable means of supporting the chassis. One shock and spring per wheel only.
(f) Shocks must be of all-steel construction, non-adjustable type. No outside valve of any type will be allowed on the shock. (factory or aftermarket)
(g) No driver shall have the ability to adjust suspension from inside car.
(h) Straight front axles are prohibited.
(i) No leaf springs.
(j) No birdcage, Watts link, Jacobs ladder. Solid mounts only.
(k) No torsion bar suspension system of any type allowed.
14. STEERING Top of Page
(a) All steering components must have safety fasteners such as cotter pins or self-locking nuts.
(b) Manufactured quick-release steering wheel hubs mandatory.
(c) Rack and pinion steering is mandatory.
(d) No power assisted steering.
15. BRAKES Top of Page
(a) Two rear wheel disc brakes minimum third and/or fourth wheel brake optional.
(b) Rotors:
1) Steel rotors mandatory, .250 minimum thickness.
2) Cutting & scalloping of rotors will be allowed
3) Drilling of rotors is permitted.
(c) Adjustable brake bias and shut off allowed. Manual or electric.
(d) Competition-type master cylinders allowed.
16. DRIVE TRAIN Top of Page
(a) Must use steel drive shaft from transmission to rear end. Minimum 2.50"dia x .083" wall thickness or 2"dia x .120" wall thickness.
(b) Quick-change rear ends are allowed. No titanium axles.
(c) Floater rear ends allowed.
(d) Drive shaft tunnel must have minimum of 3, 180 -degree hoops between firewall and seat back. Must be fabricated of minimum .1875" X 1.5" steel bar. or 1" X .095" steel tube.
(e) Quick-change rear ends are allowed. No titanium axles.
(f) Floater rear ends allowed.
17. BATTERY, FUEL SYSTEM Top of Page
(a) Battery and fuel pump must be mounted outside driver compartment. Battery must be secure and held with non- rubber strap. Electric fuel pump allowed.
(b) Fuel cell mandatory, maximum 5 gallons.
Gasoline only, no additives. No Alcohol. No U4 type fuel
(d) Fuel lines for use in fuel injection applications must be fuel injected rated.
(e) A direct manual cutoff switch shall be installed on the right rear shelf of deck lid or right front of dash. The emergency electrical cut off switch will be clearly located and marked.
18. SEAT Top of Page
(a) Seat must be high-backed aluminum, racing type. All cars will have a permanent bar located behind top of seat at shoulder level. Bottom of seat will not be more than 63" back measured from upper ball joint. Seat may be tilted back for added driver head clearance; however, no portion of the seat may be back more than 68" as measured above.
19. WHEELS AND TIRES Top of Page
(a) Steel wheels only, minimum wall thickness .090", 13" only. Wheel width maximum of 8". All wheels must be the same width.
(b) Hoosier DOT 205/60D/13, Medium only. All Hoosier factory identification must be clearly visible and un-tampered.
(c) No tire softeners / conditioners.
(d) Grooving and sipping is allowed
20. ENGINE SPECIFICATIONS Top of Page

(a) 1000 cc factory stock fuel injected Yamaha, Honda, Kawasaki, and Suzuki are allowed that had at least 500 produced in the model year that were for sale to the general public.
(b) The engine must be 3 years old to be legal. 2008 engine will be legal for 2011. 2009 engine will not be legal until 2012. The manufacturer model year will determine the year of the engine.
(c) Fuel injection system must be OEM. (Original Equipment Manufacture) No aftermarket fuel injection allowed. Upper butterflies may be removed.
(d) Four cycle, four cylinders only. Must have working transmission, clutch, and starter, with all parts in place. Complete Clutch assembly must remain in engine. No air controlled shifting devices.
(e) Charging system must be in working order.
(f) Battery powered ignition only.
(g) No auxiliary starters.
(h) Factory stock computer (black box) required for all engines. Computers may not be mapped or reprogrammed. Computer must have original factory part # visible upon inspection
(i) After market electronics that adjust Fuel Curve and Timing are allowed. The only boxes that are approved are the Dynojet 2, 3, and 3R. The Dyno jet 3 with the USB is allowed with no external modules plugged in.
(j) After market oil coolers , oil pans and radiators allowed.
(k) No aftermarket camshafts.
(l) No adjustable cam sprockets.
(m) No porting, grinding, polishing, or changing stock configuration of intake or exhaust ports allowed. Casting part lines must be visible upon inspection.
(n) No dry sump oil systems.
(o) Header must attach directly to head in stock exhaust port location
(p) After market air cleaners that do not alter/modify OEM velocity stack configuration are allowed. No alteration to OEM velocity stacks allowed.
(q) VRA approved muffler mandatory. TBD.
(r) All engines will be inspected and sealed with approved VRA seal prior to competition in a VRA event. Engines not sealed will NOT be allowed to compete. Inspection and sealing will be done by a VRA approved vendor at a nominal cost.
(i) Engine setback: The "square of the engine" (rear of the head) may not extend rearward more than 17" from the center of front spindle. No part of the engine or transmission may extend rearward more than 21 inches from center of front spindle.

21. WEIGHT Top of Page
(a) No car shall weigh under 1000 lbs without driver.
(b) No weight outside of car body, i.e. on nerf bars.
(c) Maximum ballast 80 lbs.
 
 

TABLE OF CONTENTS

BODY STYLES
FRAME AND ROLL CAGE
OVERALL DIMENSION
SIDES AND REAR QUARTER PANEL
HOOD
ROOF PANEL
SIDE WINDOW
INTERIOR
BUMPERS
NERF BARS
FIREWALLS
SUSPENSION
STEERING
BRAKES
DRIVE TRAIN
BATTERY, FUEL SYSTEM
SEAT
WHEELS AND TIRES
ENGINE SPECIFICATIONS
WEIGHT


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